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利用时域有限差分(FDTD)方法对微波脉冲与带介质孔缝矩形腔体的耦合过程进行了数值模拟研究.如果孔缝填有介质,则预期对微波耦合进入腔体的物理过程有重要影响,研究了微波与带介质孔缝矩形腔体耦合的过程中影响介质孔缝耦合共振峰和共振频率点的因素,包括孔缝长度、宽度和介质相对介电常数等物理量的影响.通过大量不同孔缝尺寸的模拟研究,发现孔缝的介质对孔缝耦合共振频率有明显影响,我们对微波与带介质孔缝耦合发生共振的公式进行了拟合,最后得出了微波脉冲与带介质孔缝矩形腔体耦合的共振条件.
The coupling process of microwave pulse with a rectangular cavity with a dielectric aperture is numerically simulated by using the FDTD method, which is expected to have an important effect on the physical process of microwave coupling into a cavity if the aperture is filled with a dielectric , The factors that affect the coupling resonance peak and resonance frequency point of the hole coupling in the process of microwave coupling with the rectangular cavity with dielectric were studied, including the influence of physical parameters such as pore length, width and dielectric relative permittivity, The results show that the medium of pore-suture has a significant influence on the resonance frequency of pore-suture coupling. We fit the formula of the resonance of microwave and the pore-suture coupling. Finally, Rectangular cavity coupled resonance conditions.